Added fixedDelayMilliseconds in yaml and docs; fixes gh-788

docs/src/main/asciidoc/verifier_contract.adoc

@@ -1036,6 +1036,31 @@ response:
     async: true
 ----
 
+You can also use the `fixedDelayMilliseconds` method / property to add delay to your stubs.
+
+.Groovy DSL
+[source,groovy,indent=0]
+----
+org.springframework.cloud.contract.spec.Contract.make {
+    request {
+        method GET()
+        url '/get'
+    }
+    response {
+        status 200
+        body 'Passed'
+        fixedDelayMilliseconds 1000
+    }
+}
+----
+
+.YAML
+[source,yml,indent=0]
+----
+response:
+    fixedDelayMilliseconds: 1000
+----
+
 === Working with Context Paths
 
 Spring Cloud Contract supports context paths.

spring-cloud-contract-verifier/src/main/groovy/org/springframework/cloud/contract/verifier/converter/YamlContract.groovy

@@ -157,6 +157,7 @@ class YamlContract {
 		public String bodyFromFile
 		public TestMatchers matchers = new TestMatchers()
 		public Boolean async
+		public Integer fixedDelayMilliseconds
 	}
 
 	@CompileStatic

spring-cloud-contract-verifier/src/main/groovy/org/springframework/cloud/contract/verifier/converter/YamlContractConverter.groovy

@@ -236,6 +236,7 @@ class YamlContractConverter implements ContractConverter<List<YamlContract>> {
 							if (yamlContract.response.body) body(yamlContract.response.body)
 							if (yamlContract.response.bodyFromFile) body(file(yamlContract.response.bodyFromFile))
 							if (yamlContract.response.async) async()
+							if (yamlContract.response.fixedDelayMilliseconds) fixedDelayMilliseconds(yamlContract.response.fixedDelayMilliseconds)
 							testMatchers {
 								yamlContract.response?.matchers?.body?.each { BodyTestMatcher testMatcher ->
 									MatchingTypeValue value = null
@@ -522,6 +523,7 @@ class YamlContractConverter implements ContractConverter<List<YamlContract>> {
 								maxOccurrence: matcher.maxTypeOccurrence()
 						)
 					}
+					fixedDelayMilliseconds = contract?.response?.delay?.clientValue as Integer
 				}
 			}
 			if (contract.input) {

spring-cloud-contract-verifier/src/test/groovy/org/springframework/cloud/contract/verifier/converter/YamlContractConverterSpec.groovy

@@ -118,6 +118,7 @@ class YamlContractConverterSpec extends Specification {
 			contract.request.matchers.jsonPathRegexMatchers[0].value() == 'bar'
 		and:
 			contract.response.status.clientValue == 200
+			if (yamlFile == ymlWithRest) contract.response.delay.clientValue == 1000 else !contract.response.delay
 			contract.response.headers.entries.find { it.name == "foo2" &&
 					((Pattern) it.serverValue).pattern == "bar" && it.clientValue == "bar" }
 			contract.response.headers.entries.find { it.name == "foo3" &&
@@ -533,6 +534,7 @@ class YamlContractConverterSpec extends Specification {
 					body([foo: "bar"])
 				}
 				response {
+					fixedDelayMilliseconds 1000
 					status(200)
 					headers {
 						header("foo2", "bar")
@@ -560,5 +562,6 @@ class YamlContractConverterSpec extends Specification {
 			yamlContract.response.body == [foo2: "bar"]
 			yamlContract.response.cookies.find { it.key == "foo" && it.value == "client" }
 			yamlContract.response.cookies.find { it.key == "bar" && it.value == "client" }
+			yamlContract.response.fixedDelayMilliseconds == 1000
 	}
 }

spring-cloud-contract-verifier/src/test/resources/yml/contract.yml

@@ -52,6 +52,7 @@ response:
 #tag::response_obligatory[]
   status: 200
 #end::response_obligatory[]
+  fixedDelayMilliseconds: 1000
   headers:
     foo2: bar
     foo3: foo33